Patents by Inventor Warren Hambly

Warren Hambly has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Driver circuit with low power termination mode
    Patent number: 7199604
    Abstract: Driver circuits and methods for operating driver circuits in automatic test equipment are provided. The driver circuit includes an output circuit operable in a dynamic mode and in a termination mode, and a mode control circuit for supplying a first current to the output circuit in the dynamic mode and for supplying a second current to the output circuit in the termination mode in response to a mode select signal. The mode control circuit may include a current multiplier and a switching circuit for switching a control current supplied to the current multiplier. In one example, the slew current supplied to the output circuit is controlled in response to the mode select signal.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: April 3, 2007
    Assignee: Analog Devices, Inc.
    Inventors: Bruce A. Hecht, Robert Duris, Warren Hambly
  • Driver circuit with low power termination mode
    Publication number: 20040239380
    Abstract: Driver circuits and methods for operating driver circuits in automatic test equipment are provided. The driver circuit includes an output circuit operable in a dynamic mode and in a termination mode, and a mode control circuit for supplying a first current to the output circuit in the dynamic mode and for supplying a second current to the output circuit in the termination mode in response to a mode select signal. The mode control circuit may include a current multiplier and a switching circuit for switching a control current supplied to the current multiplier. In one example, the slew current supplied to the output circuit is controlled in response to the mode select signal.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 2, 2004
    Inventors: Bruce A. Hecht, Robert Duris, Warren Hambly